Render tune title, subtitle and composer in Latex/HTML and not in the image. This way the titles remains a constant size even if the image needs to be scaled. And we have that text appearance under our control. I can't find a way of switching off the tune title in abcm2ps, and have worked around by setting the title format to Y0. Y is not a defined ABC header and is not found in any Dottes tune.

X: 1
T: Theme Vannetaise
T: Twiglet
O: Brittany
M: 4/4
K: G
L: 1/8
Q: 140
P: A
"Em" E2 B2 B2 AB | G2 E2 E2 FG | "D" A2 AG F2 FE | DE FA "B" G2 F2 |
"Em" E2 B2 B2 AB | "C" G2 E2 E2 FG | "D" A2 AG F2 FE | DEFD "Em" E4 :|
P: B
"Em" EF GF EF GF | EF GA B2 E2 | "D" DE FE D2>E2 | F2 A2 "B" G2 F2 |
"Em" EF GF EF GF | "C" EF GA B2 E2 | "D" DE FE D2 FA | "C" G2 "B" F2 "Em" E4 :|